⚠️ Emergency Replacement? If your furnace failed unexpectedly, prioritize safety and heat restoration first—then use this guide to understand fair pricing and avoid rushed decisions.
A new furnace unit in Ontario costs $2,500 to $7,500+, and most homeowners pay $4,000 to $10,000 total once installation is included — typically landing around $4,500–$7,000 for a mid-to-high-efficiency gas system. The exact number depends on fuel type, AFUE efficiency rating, home size, and whether your ductwork needs modification. This guide breaks down real 2026 pricing by fuel type, installation cost, available rebates, and how Ontario’s climate affects your decision between a furnace and a heat pump.
In this guide, you’ll learn the real costs of furnace units across Ontario, what drives pricing differences, installation expenses, available rebates, and how to compare quotes from local contractors. By the end, you’ll have a clear picture of what your new furnace cost in Ontario with installation will actually be—and how to maximize value without overpaying.
Looking for pricing specific to your city? See our local guides for Hamilton, Kitchener, Milton, and Cambridge.
New furnace costs in Ontario vary significantly based on fuel type, efficiency rating, and brand. Here’s a realistic breakdown of what homeowners in Toronto, Ottawa, Hamilton, and the GTA typically pay:
Gas furnaces remain the most popular choice in Ontario due to natural gas availability and operating cost efficiency.
High-efficiency furnace Ontario prices are higher upfront but deliver long-term savings on energy bills throughout the heating season.
Homes without natural gas access — or those in smaller spaces — often turn to electric furnaces in Ontario.
While installation is often simpler, electricity costs in Ontario make these units more expensive to operate annually compared to gas.
Fewer Ontario homes install oil furnaces today, though rural properties still commonly rely on them.
Fuel prices fluctuate with these systems, and they require regular maintenance plus scheduled deliveries, which adds to long-term costs.
| Home Size | Recommended BTU Range | Typical Installed Cost |
|---|---|---|
| Under 1,200 sq ft | 40,000–60,000 BTU | $3,500–$5,500 |
| 1,200–2,000 sq ft | 60,000–80,000 BTU | $4,500–$7,000 |
| 2,000–3,000 sq ft | 80,000–100,000 BTU | $5,500–$8,500 |
| 3,000+ sq ft | 100,000+ BTU | $6,500–$10,000+ |
| Fuel Type | Upfront Cost Range | Annual Operating Cost | Best For |
|---|---|---|---|
| Gas (High-Efficiency) | $4,500–$7,500 | $800–$1,200 | Most Ontario homes |
| Gas (Standard) | $2,500–$3,800 | $1,100–$1,500 | Budget-conscious buyers |
| Electric | $1,800–$5,000 | $1,400–$2,200 | No gas access areas |
| Oil | $3,200–$7,200 | $1,600–$2,400 | Rural properties |
Ontario Homeowner Tip: Natural gas furnaces offer the best value for most GTA and urban Ontario homeowners when factoring in both installation and 15-year operating costs.
Estimate your own monthly and annual costs with our operating cost calculator.
Calculate the estimated monthly operating cost of your furnace with this quick quiz.
AFUE = Annual Fuel Utilization Efficiency. Standard furnaces are ~80–85%, high-efficiency models are 95–98%.
Better insulation = your furnace works less = lower monthly cost.
Colder climates mean your furnace runs far more hours per heating season.
Check your gas bill for the rate per cubic metre (m³). Average is around $1.20/m³.
Our certified partners can quote a newer high-efficiency furnace that could cut your costs significantly.
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Important: This is a general estimate for informational purposes only. Your actual operating costs may vary based on thermostat settings, furnace age, local climate, and usage patterns.
These are estimates. Get precise quotes from certified contractors — for free.
GET FREE QUOTESThe furnace unit itself is only part of the total furnace installation cost in Ontario. Labor, materials, and system modifications significantly impact your final bill.
Home Size: Larger homes require higher-capacity furnaces and more extensive ductwork, increasing both equipment and labor costs.
Existing Infrastructure: Older homes may need ductwork repairs, electrical upgrades, or venting changes to accommodate modern high-efficiency systems that meet Ontario building code requirements.
Fuel Type Conversion: Switching from oil to gas or electric to gas requires new gas lines, venting, and permits—adding $1,500–$3,500 to the project.
Brand & Warranty: Premium brands like Carrier, Lennox, and Trane often include extended warranties but come with higher upfront costs. Mid-tier brands like Goodman and Bryant offer solid performance at 15–20% lower prices with comparable reliability.
Seasonal Demand: Installation rates tend to rise during peak heating season (October–January). Scheduling off-season can sometimes reduce labor costs by 10–15%.
Contractor Licensing: Always verify your contractor is TSSA-certified (Technical Standards and Safety Authority) to ensure compliance with Ontario safety regulations and valid warranties.
Not sure what size furnace you need? Try our free furnace size calculator to get a quick BTU estimate, or request quotes with professional heat load calculations to avoid costly oversizing mistakes.
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Certified HVAC contractors in your area will confirm the right size and provide accurate pricing.
Get Free QuotesAnnual Fuel Utilization Efficiency (AFUE) measures how much fuel converts to usable heat. This single number dramatically affects both upfront costs and long-term savings. The EnerGuide rating system helps Canadian homeowners compare furnace efficiency across brands and models.
How AFUE Works:
Ontario Climate Consideration: With heating seasons running October through April, high-efficiency furnaces (95%+ AFUE) typically pay for themselves within 5–7 years through reduced natural gas consumption. According to Natural Resources Canada, upgrading from 80% to 95% AFUE can save Ontario homeowners $300–$500 annually.
Ontario homeowners can access multiple rebate programs to offset furnace replacement costs, making high-efficiency upgrades more affordable see our full Ontario furnace rebates guide for program-by-program details.
Enbridge Gas offers rebates for qualifying high-efficiency furnaces:
Eligibility: Must be an Enbridge customer installing ENERGY STAR® certified equipment through a registered contractor.
This federal program provides up to $5,000 for energy-efficient home upgrades, including furnaces.
How It Works: Complete an initial home energy evaluation through the Canada Greener Homes Initiative, install eligible upgrades, then submit a second evaluation to claim your rebate.
Some Ontario municipalities offer additional incentives for energy-efficient heating systems. Toronto, Ottawa, and Hamilton occasionally run seasonal programs. Check with your local utility provider or municipality for region-specific programs.
Smart homeowners stack multiple programs:
Quick answer: For most Ontario homes, a gas furnace remains the lower-upfront-cost, more reliable choice in extreme cold, while a cold-climate heat pump costs more to install but qualifies for significantly larger rebates and cuts long-term operating costs — especially when paired with a furnace in a hybrid system.
| Gas Furnace | Cold-Climate Heat Pump | |
|---|---|---|
| Upfront installed cost | $2,500–$7,500 | $7,500–$18,000+ |
| Performance below -15°C | Consistent, no drop-off | Reduced efficiency; often needs backup heat |
| Ontario rebates available | Up to $250 (Enbridge) | Up to $7,500+ (combined federal/provincial) |
| Annual operating cost (2,000 sq ft home) | $800–$1,500 | Varies by electricity rate; can be lower with high COP |
| Lifespan | 15–20 years | 10–15 years |
Why this matters for Ontario homeowners specifically: Ontario's climate creates a genuine trade-off that doesn't exist in milder provinces. A furnace delivers steady heat output regardless of outdoor temperature, while even cold-climate heat pumps see efficiency drop as temperatures fall toward -20°C. This is why many Ontario HVAC contractors now recommend hybrid (dual-fuel) systems — a heat pump handles heating down to roughly -10°C to -15°C, with the furnace automatically taking over during extreme cold snaps. This setup lets homeowners capture the larger heat pump rebates while keeping furnace reliability as backup. For a deeper side-by-side breakdown, see our full furnace vs. heat pump comparison guide.
When a furnace alone still makes sense: Older homes without central air infrastructure, homes on a tight upfront budget, or homes in colder northern/rural Ontario regions where heat pump performance drops off more before backup heat kicks in.
When to seriously consider a heat pump or hybrid: If you're already replacing both a furnace and an aging air conditioner, the combined rebate value often closes most of the price gap — ask any contractor you quote to run both scenarios side by side.
Several factors determine the final cost of your furnace replacement:
Gas furnaces typically offer the best balance of upfront cost and operating efficiency in Ontario. Electric furnaces have lower installation costs but higher monthly bills. Oil furnaces are costly to run and maintain.
Furnace capacity is measured in BTUs (British Thermal Units). Ontario homes typically need 40–60 BTUs per square foot, depending on insulation quality, window efficiency, and layout — use our BTU calculator to get an estimate specific to your home.
depending on insulation quality, window efficiency, and layout. A 2,000 sq ft home in the GTA generally requires a 60,000–80,000 BTU furnace.
Proper sizing requires a Manual J heat load calculation performed by TSSA-certified contractors—not guesswork based on your old furnace.
Premium Tier (Carrier, Lennox, Trane):
Mid-Tier (Bryant, American Standard, Goodman):
Budget Tier (Comfort-Aire, Aire-Flo):
Note: Brand performance varies significantly based on installation quality and ongoing maintenance. Even premium brands underperform when improperly installed.
Not sure which tier fits your situation? Take our furnace recommendation quiz for a personalized Entry / Mid / High-End suggestion.
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Connect with certified local HVAC contractors and get precise pricing for your recommended furnace.
Get Free QuotesFor homeowners who prioritize quiet, even heat, modulating furnaces are the top-tier choice — they deliver the most consistent temperature control and operate 30–40% more quietly than single-stage units.
Modern furnaces increasingly ship with, or support, Wi-Fi-connected controls that go beyond a basic programmable thermostat.
What "smart-enabled" actually means for a furnace:
Does it add to the cost? Smart-capable furnace models typically run 5–10% above a comparable non-connected unit of the same AFUE rating. A separate smart thermostat adds $200–$500 installed, but is often the more cost-effective entry point if you're not replacing the furnace itself yet. check our best smart thermostats in Canada roundup for top-rated options.
Is it worth it? For most homeowners, a smart thermostat delivers the bulk of the savings and convenience — typically 10–15% lower heating costs through better scheduling — without needing a fully IoT-native furnace. Full smart-diagnostic furnaces are most worth the premium for larger homes, rental properties, or anyone who wants remote fault alerts before a failure becomes an emergency.
A commonly used HVAC industry rule of thumb: multiply the repair cost by the furnace's age in years. Try our repair-or-replace quiz for a scored recommendation based on your specific furnace. If the result exceeds roughly $5,000, replacement is typically the smarter long-term investment. A 15-year-old furnace needing a $400 repair (15 × $400 = $6,000) is a strong replacement candidate; a 3-year-old furnace needing the same $400 repair (3 × $400 = $1,200) is worth fixing.
Contractors sometimes oversize furnaces, assuming "bigger is better." Oversized units cycle on and off frequently, wasting energy and shortening lifespan by 3–5 years. Always request a Manual J heat load calculation before installation.
Avoid This Common Installer Upsell: If a contractor recommends a furnace size without measuring your home, calculating heat loss, or reviewing insulation—get a second opinion.
Failing to research available rebates can cost you $1,000–$2,500. Apply for incentives before installation begins—most programs require pre-approval or enrollment.
Many Ontario HVAC contractors and lenders offer 0%–interest financing plans for furnace replacement, often spreading the cost over 12–60 months — see our furnace financing guide for how these plans typically work. Financing can make a high-efficiency unit accessible even when the rebate hasn't been claimed yet — just confirm whether the plan requires a lien on your home (common with some third-party HVAC financing companies) before signing.
Accepting the first quote without comparing at least three licensed TSSA-certified contractors often results in overpaying by 15–25%. Verify contractor credentials, online reviews, and warranty terms.
The cheapest furnace rarely delivers the best value. A $3,000 furnace with $1,800 annual heating bills costs more over 10 years than a $5,500 high-efficiency model with $1,100 annual bills. Run your own numbers with our savings calculator to see the real 10-year difference.
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Get free quotes from certified local contractors and find out the exact cost of upgrading your furnace.
Get Free QuotesQuality furnace quotes in Ontario should detail:
If a quote lacks these details, it's incomplete.
Furnace prices in Ontario typically range from $2,500 to $7,500+ for the unit alone. Including installation, most homeowners pay between $4,000 and $10,000 total, depending on fuel type, efficiency, and home size. Toronto and GTA installations may run 5–10% higher due to labor rates and permitting costs.
Ontario homeowners can access Enbridge Gas rebates (up to $250), the Canada Greener Homes Grant (up to $1,250), and potential municipal incentives. Combining programs can save $1,000–$2,500 on high-efficiency installations when coordinated properly.
Yes. Ontario's long, cold winters mean high-efficiency furnaces (95%+ AFUE) pay for themselves through reduced energy bills within 5–8 years. They also qualify for better rebates, reduce environmental impact, and improve home resale value in competitive markets like Toronto and Ottawa.
Most furnaces last 15–20 years with proper maintenance. High-efficiency models may last slightly longer due to advanced technology and better build quality. Annual tune-ups extend lifespan and maintain warranty coverage. Neglecting maintenance can reduce lifespan to 12–15 years.
No. Ontario law requires TSSA-licensed HVAC contractors to install furnaces. DIY installations void all manufacturer warranties, violate building codes, fail inspections, and create serious safety risks including carbon monoxide leaks and fire hazards. Unlicensed installations may also complicate home insurance claims.
Higher labor costs and stricter permit requirements often add $300–$800 to installation. Older homes in established neighborhoods (The Beaches, High Park, Leslieville) may require additional ductwork modifications.
If you're near Milton or Oakville, see our dedicated Furnace Prices in Milton, Ontario guide for a closer look at new-build vs. older-home cost differences in that market.
Colder climate than southern Ontario means sizing calculations require 10–15% higher capacity. Rural Ottawa properties may face premium charges for service calls.
Mix of older and newer housing stock. Homes built pre-1980 often need extensive duct sealing and insulation upgrades before high-efficiency furnace installation delivers optimal performance.
For a full local breakdown, check out our Furnace Prices in Hamilton guide.
London, Kingston, Kitchener-Waterloo typically see pricing 5–10% below GTA rates, though contractor availability may be more limited during peak season.
Homeowners in the Kitchener-Waterloo region can find exact local pricing in our Furnace Prices in Kitchener and Furnace Prices in Cambridge, ON guides.
Navigating furnace prices in Ontario doesn't have to be overwhelming. By understanding the cost factors—fuel type, efficiency, installation complexity, and available rebates—you can confidently plan your replacement budget. Remember that the cheapest option isn't always the best value. Investing in a properly-sized, high-efficiency furnace installed by TSSA-certified professionals will deliver comfort, savings, and reliability for 15–20 years.
Ready to get started? Compare local contractor quotes to find the best furnace prices in Ontario for your home. The pricing ranges in this guide reflect current market rates from licensed, TSSA-certified HVAC contractors operating across the GTA and major Ontario cities, cross-checked against manufacturer pricing and industry benchmarks. Request detailed estimates that include equipment specifications, installation costs, rebate eligibility, and heat load calculations — and choose a contractor who prioritizes your long-term comfort and savings, not just a quick sale.
Get a personalized estimate with our furnace cost calculator before you request quotes.
By submitting this form, you are giving your consent to receive phone calls and text messages from our contractor partners.
These are estimates. Get precise quotes from certified HVAC contractors in your area — for free.
Get Free QuotesIf you're planning ahead:
If your furnace failed unexpectedly: First, ensure your family is safe and has temporary heat. Once stabilized, use this guide to evaluate emergency quotes fairly—even urgent replacements deserve fair pricing and proper sizing.
Your comfort during Ontario winters is too important to leave to guesswork. Make an informed decision with real data, professional guidance, and fair pricing.
At FurnacePrices.com, we bridge the gap between homeowners and reliable, vetted HVAC contractors — whether you're installing a new furnace, upgrading your air conditioner, or replacing your full home comfort system.
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Ontario Cities We Commonly Serve
FurnacePrices.com helps homeowners across Ontario compare heating and cooling systems, estimate installation costs, and connect with trustworthy contractors. Frequently supported service areas include:
Our network covers most major and mid-sized regions in Ontario, whether you're replacing an older furnace/AC or upgrading to a high-efficiency model. 👉 See the full list of Ontario service regions
🏆 Trusted by Leading Canadian HVAC Associations
Many companies in our contractor network are active members of respected national and provincial HVAC organizations, including the Mechanical Contractors Association of Canada, Canadian Institute of Plumbing & Heating, Thermal Environmental Comfort Association, and Heating, Refrigeration and Air Conditioning Institute of Canada. These affiliations reflect strong training standards, code compliance, and reliable installation practices.
What Affects Furnace & AC Installation Pricing in Ontario?
Installation costs vary depending on home size and heating/cooling load — larger homes require higher-BTU furnaces or higher-tonnage AC units — as well as installation complexity (venting, ductwork, gas lines, and electrical upgrades), brand and efficiency level, regional labour rates, and whether you need a repair or a full system replacement. Understanding these factors helps you plan your installation budget more accurately.
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